We've gone through several seats to get to this: http://www.safeguardseat.com/childseating.htm
although I think the Recaro is much cooler looking and costs less.
We (I being the technical one) picked the Safegaurd for the aluminum internal frame. Where many others are just a plastic shell, it has foam much like the inside of a helmet to absorb impacts. There have been several recalls of the plastic seats (not Recaro or Simpson that I know of) for breaking at mounting points. I'd say just be sure to look for a design with the side impact protection and find a certified child seat installer to check your setup before putting your kiddo in it.
BTW, congrats, we're expecting our second in August.
Long time lurker, infrequent poster,
-phil
